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Chiayu Ai
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Tucson, AZ, US
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last 30 patents
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Patent Grant
Coaxial disc-mount for measuring flatness of computer-drive discs b...
Patent number
5,689,337
Issue date
Nov 18, 1997
Wyko Corporation
Joseph A. Lamb
G01 - MEASURING TESTING
Information
Patent Grant
Centroid approach for estimating modulation peak in broad-bandwidth...
Patent number
5,633,715
Issue date
May 27, 1997
Wyko Corporation
Chiayu Ai
G01 - MEASURING TESTING
Information
Patent Grant
Method and apparatus for absolute optical measurement of entire sur...
Patent number
5,502,566
Issue date
Mar 26, 1996
Wyko Corporation
Chiayu Ai
G01 - MEASURING TESTING
Information
Patent Grant
Combination of white-light scanning and phase-shifting interferomet...
Patent number
5,471,303
Issue date
Nov 28, 1995
Wyko Corporation
Chiayu Ai
G01 - MEASURING TESTING
Information
Patent Grant
Multimode-laser interferometric apparatus for eliminating backgroun...
Patent number
5,452,088
Issue date
Sep 19, 1995
Wyko Corporation
Chiayu Ai
G01 - MEASURING TESTING
Information
Patent Grant
Method for testing an optical window with a small wedge angle
Patent number
5,398,112
Issue date
Mar 14, 1995
Wyko Corporation
Chiayu Ai
G01 - MEASURING TESTING
Information
Patent Grant
Interferometric integration technique and apparatus to confine 2.pi...
Patent number
5,321,497
Issue date
Jun 14, 1994
Wyko Corporation
Chiayu Ai
G01 - MEASURING TESTING
Information
Patent Grant
Optical alignment system utilizing alignment spot produced by image...
Patent number
5,064,286
Issue date
Nov 12, 1991
Wyko Corporation
Chiayu Ai
G01 - MEASURING TESTING